Stephanoceratidae is a family of planulate and coronate ammonites within the Stephanoceratoidea. Shells are evolute so that all whorls are exposed and...
2 KB (103 words) - 09:02, 19 August 2021
Treatise on Invertebrate Paleontology, 1957 Part L. They are the: Stephanoceratidae Kosmoceratidae Otoitidae Sphaeroceratidae Cardioceratidae The Pachyceratidae...
4 KB (400 words) - 21:36, 29 August 2021
the Bajocian (Middle Jurassic). It is the type genus of the family Stephanoceratidae. Ammonites humphriesianum J. de C. Sowerby, 1825, subsequent designation...
5 KB (496 words) - 09:01, 18 November 2024
The ammonites of Perisphinctidae were derived from the ancestral Stephanoceratidae in the Middle Jurassic Bajocian: perisphinctid ammonites ranged from...
3 KB (279 words) - 14:28, 5 July 2025
stage at the beginning of the Middle Jurassic, included in the family Stephanoceratidae. Garantiana is strongly ribbed and generally evolute. The inner whorls...
2 KB (132 words) - 14:15, 6 August 2025
Jurassic genus of ammonite included in the stephanoceratoid family Stephanoceratidae. Normanites was previously included in the Otoitidae by Arkell et...
3 KB (245 words) - 08:17, 18 November 2024
bremeri East Skoura syncline Isolated shells An ammonite of the family Stephanoceratidae and indicator of the Bathonian age Cercomya C. undulata El Mers Isolated...
44 KB (1,595 words) - 19:23, 4 June 2025
& Cresta Middle Jurassic (Bajocian) Italy A member of the family Stephanoceratidae. Beudanticeras vinei Sp. nov Valid Day in Jell & Cook Australia Bouleiceras...
105 KB (4,811 words) - 11:08, 5 August 2025
mutabile Cabeço da Ladeira Phragmocones An ammonite of the family Stephanoceratidae Stomechinus bigranularis, sp. Cabeço da Ladeira Semi-articulated skeletons...
18 KB (1,143 words) - 22:59, 1 August 2025
Middle Jurassic ammonites of the families Erycitidae, Otoitidae and Stephanoceratidae from southern Germany" (PDF). Zitteliana. 50: 71–88. Archived from...
5 KB (450 words) - 01:10, 30 July 2025
They gave rise, probably through varieties of Docidoceras to the Stephanoceratidae and Sphaeroceratidae, which in turn gave rise to the different phylogenetic...
2 KB (204 words) - 19:47, 18 July 2023
approximately 200 to 145 million years ago. Hlawiceras belongs to the family Stephanoceratidae, true ammonites, which is contained in the Stephanoceratoidea. It...
2 KB (139 words) - 19:57, 18 November 2024
Perisphinctidae: Middle and Upper Jurassic root stock, derived from the Stephanoceratidae (Middle Jurassic direct derivatives of the Perisphinctidae) Morphiceratidae...
3 KB (237 words) - 20:42, 7 January 2024
Phaulostephanus is an extinct genus from the ammonoid family Stephanoceratidae, which is part of the ammonitid superfamily Stephanoceratoidea, that lived...
3 KB (193 words) - 08:30, 18 November 2024
Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: †Ammonoidea Order: †Ammonitida Family: †Stephanoceratidae Genus: †Kosmermoceras Arkell, 1952...
1 KB (71 words) - 20:00, 18 November 2024
is a Stephanoceratacean (ammonite) species belonging to the family Stephanoceratidae. These fast-moving nektonic carnivores lived during the Jurassic period...
2 KB (112 words) - 08:57, 18 November 2024
Animalia Phylum: Mollusca Class: Cephalopoda Subclass: †Ammonoidea Order: †Ammonitida Family: †Stephanoceratidae Genus: †Kumatostephanus Buckman, 1922...
1 KB (89 words) - 20:00, 18 November 2024
Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Superfamily: Stephanoceratoidea Family: Stephanoceratidae Genus: Cadomites Munier-Chalmas 1892...
3 KB (133 words) - 19:40, 18 November 2024
Duashnoceras is an extinct ammonoid cephalopod genus included in the Stephanoceratidae that lived during the Bathonian stage of the Middle Jurassic. Duashnoceras...
3 KB (319 words) - 18:00, 13 August 2024
is a Stephanoceratacean (ammonite) species belonging to the family Stephanoceratidae. These fast-moving nektonic carnivores lived during the Jurassic period...
2 KB (86 words) - 22:04, 20 March 2025
Ammonite of the family Stephanoceratidae Stephanoceras S. spp. Pina-Barracas.1 Isolated shells An Ammonite of the family Stephanoceratidae Toxamblyites T. spp...
32 KB (1,185 words) - 03:18, 15 July 2025
Middle Jurassic ammonites of the families Erycitidae, Otoitidae and Stephanoceratidae from southern Germany" (PDF). Zitteliana. 50: 71–88. Archived from...
2 KB (128 words) - 00:35, 29 April 2022
Thamboceratidae, based on sutural morphology, removing it from the Stephanoceratidae where it was previously included. Sepkoski, Jack (2002). "Sepkoski's...
2 KB (193 words) - 19:50, 18 November 2024
classification Kingdom: Animalia Phylum: Mollusca Class: Cephalopoda Subclass: Ammonoidea Order: Ammonitida Family: Stephanoceratidae Genus: Pseudogarantiana...
2 KB (44 words) - 08:40, 18 November 2024
regular zig-zag pattern. Subcollina is probably derived from the Stephanoceratidae. Some stephanoceratids also have the zig-zag pattern of Subcollina...
2 KB (178 words) - 22:07, 20 March 2025
is a Stephanoceratoidean (ammonite) genus belonging to the family Stephanoceratidae. These fast-swimming carnivores lived during the Jurassic period,...
2 KB (64 words) - 22:04, 20 March 2025
Middle Jurassic ammonites of the families Erycitidae, Otoitidae and Stephanoceratidae from southern Germany" (PDF). Zitteliana. 50: 71–88. Archived from...
2 KB (165 words) - 03:06, 24 June 2025
S2CID 251449748. Mitta, V. V. (2023). "On the Garantianinae (Ammonoidea: Stephanoceratidae) from the Upper Bajocian of the Kuban River Basin (Northern Caucasus...
162 KB (8,187 words) - 18:03, 11 July 2025
Jurassic (Bajocian) Dhruma Formation Saudi Arabia A member of the family Stephanoceratidae. The type species is E. glabrum; genus also includes new species E...
201 KB (8,315 words) - 03:49, 4 July 2025
Bajocian France A species of Infraparkinsonia, a possible member of Stephanoceratidae. Kashmirites baidi Sp nov Valid Brühwiler & Bucher in Brühwiler et...
124 KB (4,004 words) - 06:05, 23 May 2025